PEDOT:PSS Conductive Polymer Composition for Rapid Pathogen Inhibition

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Solution Overview

Problem

Existing antibacterial and antiviral substances like nanogold and nanosilver accumulate in the body and require prolonged reaction times to be effective, while molecular enzymes (VirusBom) are inefficient.

Innovation Solution

A conductive polymer material composed of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) with a molar ratio ranging from 1:1 to 1:25, optionally including dimethyl sulfoxide, is used to inhibit pathogenic infections through topical application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If nanogold or nanosilver is used for antibacterial and antiviral functions, then the antibacterial and antiviral effect is achieved, but the substances accumulate in the body and cannot be excreted

Engineering Contradiction:

Improveantibacterial and antiviral effectVSAvoidaccumulation in the body

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the material parameter from metal nanoparticles (nanogold, nanosilver) to conductive polymer material (PEDOT:PSS), which has different biocompatibility and excretion properties. The conductive polymer material maintains antibacterial and antiviral effectiveness while being biodegradable and excretable, thus resolving the accumulation problem.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite conductive polymer material PEDOT:PSS that combines poly(3,4-ethylenedioxythiophene) and poly(styrenesulfonate) in a specific molar ratio (1:1 to 1:25). This composite structure provides both the desired antibacterial/antiviral activity and improved biocompatibility compared to pure metal nanoparticles.

Inventive Principle:

Principle #40Composite materials

2Reliability

If molecular enzymes (VirusBom) are used for antibacterial and antiviral functions, then the antibacterial and antiviral effect is achieved, but a long reaction time is required

Engineering Contradiction:

Improveantibacterial and antiviral effectVSAvoidreaction time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the biochemical mechanism of molecular enzymes (VirusBom) with a physical mechanism based on electrical conductivity. The conductive polymer material generates electrical signals that directly disrupt pathogen cell membranes, eliminating the need for prolonged biochemical reactions and achieving rapid pathogen inactivation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the mechanism parameter from enzymatic biochemical reaction to electrical conduction. By utilizing the electrical properties of the conductive polymer material, the antibacterial and antiviral action occurs rapidly through electrical disruption of pathogen structures, rather than through slow enzymatic degradation.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If conventional antibacterial substances are used, then pathogen inhibition is achieved, but the substances cannot be excreted by the human body

Engineering Contradiction:

Improvepathogen inhibitionVSAvoidexcretion by human body

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent changes the material composition parameter from non-biodegradable metal nanoparticles to biodegradable conductive polymer. The PEDOT:PSS composite material is designed to be metabolizable and excretable by human physiological systems, while maintaining its pathogen inhibition function throughout the treatment period.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The conductive polymer material effectively inhibits or kills pathogenic bacteria and viruses, demonstrating excellent antibacterial and antiviral activities, with rapid action against a range of pathogens.

Implementation Method 1

a conductive polymer material including a conductive component... The conductive component contains poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)

Methodology Applied

Scientific EffectElectrical conductivity: Conduction (electrical)

Data Source

PatentEP4115890B1Conductive polymer material for use in inhibiting pathogenic infection and non-therapeutic method for inhibiting growth of pathogens

Publication Date: 2025.12.31 DAILY VITA LTD CO

AI summary

Disclosed herein are methods for inhibiting pathogenic infection and inhibiting growth of pathogens using a conductive polymer material including a conductive component. The conductive component contains poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate), and a molar ratio of poly(3,4-ethylenedioxythiophene) to poly(styrenesulfonate) in the poly(3,4-ethylenedioxythiophene)-poly (styrenesulfonate) ranges from 1:1 to 1:25.